Canon CX-1 - Manual (Page 39)

5. Basic Photography
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9 Determine the area to be photographed.
Use the external eye fixation lamp to guide the patient’s eye.
10 Focus on patient’s eye.
Turn the focus knob to focus the image.
When using the focus indicator, ensure that the split
lines are aligned into a single straight line.
When it is difficult to guide a patient’s eye using the external eye fixation lamp
Patients’ eyes can also be guided using the internal eye fixation target (sold separately).
For details, contact a Canon representative or distributor.
When the split lines cannot be aligned
If the patient diopter is not in the range of -10 to +15 D, focusing cannot be performed using the
focus indicator.
In this case, use the diopter compensation function (see page 34) to focus with the cross hair
line in the viewfinder.
When bringing the target into exact focus
When bringing the target into focus, the focus indicator serves as the general guideline for
focusing.
To bring it into focus even more exactly, focus on the target in such a way that the cross hair lines
in the viewfinder and fundus image can be clearly seen at the same time.
Split line
NG
Good
NG